<template lang="">
    <div>
        <h1>{{message}}</h1>
        <button @click="greet">greet</button>
    </div>
</template>
<script>
export default {
    data() {
        return {
            message:'Hello,Vue3!'
        }
    },
    methods:{
        greet(){
            this.message = 'Hello,' + this. $attrs.name  +'!'
        }
    }
}
</script>
<style >
    
</style>